<template>
	<view class="previewLayout">
		<swiper circular>
			<swiper-item v-for="item in 5">
				<image @click="toHideMask" src="/static/wallpaper/w7.jpg"></image>
			</swiper-item>
		</swiper>

		<view class="mask" v-if="showMask">
			<view class="back" @click="toBack" :style="{
				top: getStatusBarHeight() + 'px'
			}">
				<uni-icons type="back" size="20" color="#ffffff"></uni-icons>
			</view>

			<view class="count">4 / 8</view>

			<view class="time">
				<uni-dateformat :date="Date.now()" format="hh:mm"></uni-dateformat>
			</view>
			<view class="date">
				<uni-dateformat :date="Date.now()" format="yyyy年MM月dd日"></uni-dateformat>
			</view>

			<!-- 图片信息栏 -->
			<view class="footer">
				<view class="box" @click="showPopup">
					<uni-icons type="info" size="28"></uni-icons>
					<text class="text">信息</text>
				</view>
				<view class="box">
					<uni-icons type="star" size="28"></uni-icons>
					<text class="text">喜欢</text>
				</view>
				<view class="box">
					<uni-icons type="download" size="28"></uni-icons>
					<text class="text">下载</text>
				</view>
			</view>
		</view>

		<!-- 弹出层 -->
		<uni-popup type="bottom" ref="popup">
			<view class="popupInfo">
				<view class="popupHeader">
					<view class="title">壁纸信息</view>
					<uni-icons type="close" size="18" @click="closePopup"></uni-icons>
				</view>

				<scroll-view>
					<view class="row">
						<view class="lable">壁纸ID：</view>
						<text selectable class="value">123456</text>
					</view>
					<view class="row">
						<view class="lable">分类：</view>
						<text selectable class="value">风景</text>
					</view>
					<view class="row">
						<view class="lable">发布者：</view>
						<text selectable class="value">小明</text>
					</view>
					<view class="row">
						<view class="lable">评分：</view>
						<text selectable class="value rateBox">
							<uni-rate readonly touchable value="5"></uni-rate>
							<text class="score">5星</text>
						</text>
					</view>
					<view class="row">
						<view class="lable">摘要：</view>
						<text selectable class="value">图片的摘要</text>
					</view>
				</scroll-view>
			</view>
		</uni-popup>
	</view>
</template>

<style lang="scss">
	.previewLayout {
		width: 100%;
		height: 100vh;
		position: relative;

		swiper {
			width: 100%;
			height: 100%;

			image {
				width: 100%;
				height: 100%;
			}
		}

		.mask {
			&>view {
				position: absolute;
				color: white;
				margin: auto;
				left: 0;
				right: 0;
				width: fit-content;
			}

			// 返回按钮
			.back {
				width: 60rpx;
				height: 60rpx;
				left: 30rpx;
				top: 30rpx;
				margin-left: 0;
				background-color: rgba(0, 0, 0, 0.5);
				border-radius: 50%;
				backdrop-filter: blur(10px);
				display: flex;
				justify-content: center;
				align-items: center;
			}

			.count {
				// 10vh相当于视口高度的10%
				top: 10vh;
				background-color: rgba(0, 0, 0, 0.3);
				padding: 8rpx 28rpx;
				border-radius: 40rpx;
				backdrop-filter: blur(10px);
				font-size: 28rpx;
			}

			.time {
				font-size: 150rpx;
				// 10vh + 80rpx 表示视口高度10% + (80 / 750屏幕宽度)
				top: calc(10vh + 80rpx);
				font-weight: 100;
				line-height: 1em;
				text-shadow: 0 4rpx rgba(0, 0, 0, 0.3);
			}

			.date {
				font-size: 35rpx;
				top: calc(10vh + 80rpx + 150rpx);
				text-shadow: 0 2rpx rgba(0, 0, 0, 0.3);
			}

			.footer {
				bottom: 10vh;
				background-color: rgba(255, 255, 255, 0.8);
				width: 65vw;
				height: 120rpx;
				display: flex;
				justify-content: space-around;
				align-items: center;
				backdrop-filter: blur(20px);
				border-radius: 60rpx;
				color: black;
				box-shadow: 0 0 2rpx rgba(0, 0, 0, 0.1);

				.box {
					display: flex;
					flex-direction: column;
					justify-content: center;
					padding: 2rpx 12rpx;

					.text {
						font-size: 26rpx;
					}
				}
			}
		}

		// 弹出层
		.popupInfo {
			background-color: white;
			padding: 30rpx;
			border-radius: 30rpx 30rpx 0 0;
			overflow: hidden;

			// 弹出层头部
			.popupHeader {
				display: flex;
				justify-content: space-between;
				align-items: center;

				.title {
					font-size: 26rpx;
				}

				.close {
					padding: 6rpx;
				}
			}

			// 弹出层内容
			scroll-view {
				max-height: 60vh;

				.row {
					display: flex;
					margin: 16rpx 0;
					font-size: 32rpx;

					.lable {
						width: 150rpx;
						text-align: right;
					}

					.value {
						flex: 1;
						width: 0;
					}

					.rateBox {
						display: flex;
						align-items: center;

						.score {
							margin-right: 10rpx;
							font-size: 28rpx;
						}
					}
				}
			}
		}
	}
</style>

<script setup>
	import {
		ref
	} from 'vue';
	import { getStatusBarHeight } from '../../utils/system';
	// 默认情况下显示mask
	const showMask = ref(true);
	// 弹出层状态控制
	const popup = ref(null);

	// 返回上一页
	const toBack = () => {
		uni.navigateBack();
	}

	// 控制mask的显示与隐藏
	const toHideMask = () => {
		showMask.value = !showMask.value;
	}

	// 显示弹出层
	const showPopup = () => {
		popup.value.open();
	}

	// 关闭弹出层
	const closePopup = () => {
		popup.value.close();
	}
</script>